Tuesday, 11 December 2012

~Utilities

- Scandisk 
   
  Scandisk checks your disk for any errors or faults-faults in file system and physical faults in the disk itself and it either fixes these faults or it emarginates  the faulty sectors so that they are not used anymore.

- Compressed folders 

   Folders that are compressed using the Compressed (zipped) folders feature Use Less Space and can be transferred to other computers more quickly.

- Virus and Antivirus 

  An Antivirus software serves to protect your computer from viruses

Tuesday, 4 December 2012

~ Colour-coded keyboards

This keyboard is ideal for anyone who requires the important keys to be clearly labelled.

Friday, 23 November 2012

~ Word processing

~ Word processing

Word processing is used for the creation of text documents. It has replaced the electronic typewriter on most        
offices, because of the ease in which documents can be edited, searched and reprinted.

~ Mail Merge

Mail merge is used to create personalised letters by combining together a form letter and a list of data (that may include names, addresses etc.)

~ Computer logic

~ Binary

Binary is a number system. It is the ideal number system to represent two-states because it has only two digits : 0 and 1

~ ASCII

ASCII ( American Standard Code for Information Interchange ) is an 8-bit code used to represent characters in binary.
                                                           8-bits = 256 characters 

~ Unicode

An international organisation, known as the Unicode Consortium, was formed to deal with the problems that the ASCII had.
                                                       16-bit = 65,539 characters 


~ Modem

Convert between the analogue signals used in telephone cables and the digital signals used by a computer.

~ Computer System

 ~ What is a computer ?

 A digital computer is a machine that can be programmed to accept data (input) and process it into       information (output).

~ Defragmentation

The disk defregmenter rearranges the files and free space on your disk so that files are opened more quickly because they are stored in adjacent units and free space is consolidated.

 ~ To make Defragmentation